Combination square and level



Dec. 20, 1927.

K 1,653,561 D. G. GRAY COMBINATION SQUARE AND LEVEL Filed oct. 6. 192e 2 sheetsashee; 1

Dec. 20, 1927. Y 1,653,561

D. G. GRAY COMBINATION SQUARE AND LEVEL Filed Oct. 6. 1926 2 Sheets-Sheet 2 Patented Dec. 20, 1927.

DAVID epenAY, on VANCOUVER, 'BRITISH' COLUMBIA; CANADA.

, COMBINATION SQUARE YAND LII-VIII..

n Appiicationled'octgbere,192e. seriainofiaasti.

This invention relates toacOmbiDa-tion square and level wherein an integrally'- square steel blade is pivotally mounted within. afstock in which provision is made for clamping and locking the blade in various angular or longitudinal.positions soy that it maybe used either asV aKV framing-square, a try-square, or as a bevel stock. I

Imbedded within the stock'of the .square are two levelling tubes, one having its axis parallel with'the edge of the stock andthe other at rightangles thereto, so that they may be used for levelling or in connection with the square for plumbing determinations.

lowing specification, reference being made to the drawings which form part of this application, in which:

Fig. 1 is a face view of the square and stock in an elongated form with the stock opened out at the hinge.

Fig. 2 is also a face view of the tool for use as a try-square, the 'dotted lines showing its use with the blade as set for a bevel stock.

Fig. 3 is a face View of another form of try-square with the alternative position for the stock as shown in dotted lines whereby an angle of forty-five degrees is immediately obtainable.

Fig. 4 is an alternative combination to that of Fig. 3 in which the short end of the integral square is pivotable, giving various angular adjustments in relation to the edge of the stock as a base line.

Fig. 5 shows an edge View of the stock in its folded position either for portability or for use as a level.

Fi 6 is a similar View but with the stock unfoded.

Fig. 7 being a front view of the latter.

In these drawings8 represents the longer of a steel-bladed square having its shorter arm 9 preferably two-thirds the length of the longer arm 8. The edges of these blades 8 and 9 are graduated outwards. from the right angle in each case and the longer blade is apertured as shown by the longitudinal slots 10 and 11 and the pivoting holes 1 2 and 13. The stock is composed of two members14 and 15 hinged together at 16 and being of sufficient length to receive between them the shorter blade 9 of the removable square. t

The pin 17 (Fig. 5) is secured 1n one of fable in The invention is fully described in the fol- Y. with the edge of the stock and inthe same thestoclIy--1neInbers 14 and is lthreaded to receive a wing nut f18 by which the two'members the stock are clamped together on thefbladefSior 9.y ,Y The pivot hole12 is so positioned that whenthe folded stock 14,15 is swung over so that its extremity engages the edge of the shorter arm 9 and angle of forty-live is made by thel corresponding edgey of the stock. This pivot hole 12 forms no part ofitheslots 10 and 11'y because it is important lthat this mitering angle should be immediat-ely availtion.

In one edge of the stock member 15 a stock member .another level tube 20 is secured, the axis of which is at right angles to the edge of the stock.

The semicircular extremity of the slot 10 is so positioned in relation to the pivot pin 17k that the outer edge of the short member 9 exactly coincides with the edge of the stock when the stock members arerpositioned to embrace said kmember 9. The blade 8 is slotted at 10 and 11 in order that it may be adjusted to various lengths and secured at such positions by the pivot pin 17 and the vwing nut 18 to facilitate repetition measurements.V

The face 0f the lshort blade 9 is also marked with suitable angular divisions as shown at 22 and 28. A locking device for the short end of the square is provided by the catch 24 which engages a slot 25,'thus holding the square blade 8 in a rigid right angular position in relation to the stock.

So constructed this combined tool affords a large variety of convenient a plications in the work of a carpenter or bui der. All the special adaptations of the tool are designed,l

to facilitate, simplify, and accelerate prac-v tical operation.

Apart from the stock, the square 8, 9 may vbe used as an ordinary framing square.

practical working without observa-` ing the wing nut 18 when it can be slid along the slot to any desired positionl and set 'to any desired angle as a` bevel' stock, and should this position be' undesirable or inconvenient it can be released from the position shown in Fig. 4L and reversed.

Y members for pivotally mounting the square between themand for securing the blade of the square at any desired angular position ir relation to the stock.

2. The Vcombination with a flatV bladed square having one of its members apertured with a longitudinal slot, of vtwo stock members, a hinge uniting the two said members to one another at one end, and means passing through said slotv`and the free ends of said stock members for pivotally mounting the square between them and for securing .the blade of the square at any desired anceive and hold the blade of the'square lbefV Y tween them, a pin with a threadedlen'd and nut secured on the free end ofone, of the stock members and passing through anaperture in the other on',r which pin 'the said square may .bermounted, and maybe secured by the nut in any desired positionof angular adjustment in relation to thestoclr.

In testimony'whereof 'I affix my signature.

' DVIDvG. GRAY," 

